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sqlpp11/tests/sqlite3/usage/AttachTest.cpp
2021-08-01 20:37:36 +02:00

76 lines
2.6 KiB
C++

/*
* Copyright (c) 2015 - 2016, Roland Bock
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "TabSample.h"
#include <cassert>
#include <sqlpp11/sqlite3/connection.h>
#include <sqlpp11/sqlpp11.h>
#ifdef SQLPP_USE_SQLCIPHER
#include <sqlcipher/sqlite3.h>
#else
#include <sqlite3.h>
#endif
#include <iostream>
#include <vector>
namespace sql = sqlpp::sqlite3;
int main()
{
sql::connection_config config;
config.path_to_database = ":memory:";
config.flags = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE;
config.debug = true;
// Opening a connection to an in-memory database and creating a table in it
sql::connection db(config);
db.execute(R"(CREATE TABLE tab_sample (
alpha INTEGER PRIMARY KEY,
beta varchar(255) DEFAULT NULL,
gamma bool DEFAULT NULL
))");
// Attaching another in-memory database and creating the same table in it
auto other = db.attach(config, "other");
db.execute(R"(CREATE TABLE other.tab_sample (
alpha INTEGER PRIMARY KEY,
beta varchar(255) DEFAULT NULL,
gamma bool DEFAULT NULL
))");
auto left = TabSample{};
auto right =
schema_qualified_table(other, TabSample{}).as(sqlpp::alias::right); // this is a table in the attached database
// inserting in one tab_sample
db(insert_into(left).default_values());
// selecting from the other tab_sample
assert(db(select(all_of(right)).from(right).unconditionally()).empty());
return 0;
}